Games like Kingdom Wars
Games like Kingdom Wars include Dota 2, Mount & Blade II: Bannerlord, Once Human, Where Winds Meet, and Albion Online. We matched them by the tags players give Kingdom Wars on Steam (Strategy, Free to Play, RTS, Massively Multiplayer, and RPG): closest matches first, and among equally close ones the better-known games.

Dota 2
Shared: Free to Play · Strategy · Multiplayer

Mount & Blade II: Bannerlord
Shared: Strategy · Medieval · RPG

Once Human
Shared: Free to Play · Multiplayer · Building

Where Winds Meet
Shared: Free to Play · Multiplayer · Strategy

Albion Online
Shared: Free to Play · Massively Multiplayer · RPG

Game of Thrones Winter is Coming
Shared: Free to Play · Strategy · Massively Multiplayer

Blood of Steel
Shared: Free to Play · Strategy · Medieval

Total War: WARHAMMER II
Shared: Strategy · RTS · Fantasy

Crusader Kings II
Shared: Strategy · Medieval · RPG

SMITE®
Shared: Free to Play · Strategy · Multiplayer

Neverwinter
Shared: Free to Play · Massively Multiplayer · RPG

Crusader Kings III
Shared: Strategy · Medieval · RPG

Mount & Blade: Warband
Shared: Strategy · RPG · Medieval

Age of Empires II (Retired)
Shared: Strategy · RTS · Medieval

Age of Empires III: Definitive Edition
Shared: Strategy · RTS · Free to Play

Stronghold Crusader 2
Shared: Strategy · RTS · Medieval

GWENT: The Witcher Card Game
Shared: Free to Play · Strategy · RPG

Guild Wars 2®
Shared: Free to Play · RPG · Massively Multiplayer

Trove
Shared: Free to Play · RPG · Fantasy

Marvel Rivals
Shared: Free to Play · Multiplayer · Strategy

Anno 1800
Shared: Strategy · RTS · Multiplayer

SpellForce 3 Reforced
Shared: Strategy · RTS · RPG

IdleOn - The Incremental MMO
Shared: Free to Play · RPG · Multiplayer

SpellForce 3 Versus Edition
Shared: Strategy · Free to Play · RPG